Home / 145,017,883.31-200,129,512.97-81,449,424.82

Finding the Fourth Proportional to 145,017,883.31, 200,129,512.97 and 81,449,424.82

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Solution

The fourth proportional to 145,017,883.31, 200,129,512.97 and 81,449,424.82 is: 112,402,921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017,883.31 : 200,129,512.97 = 81,449,424.82 : x
  2. Step 2: Convert to fraction form
    145,017,883.31/200,129,512.97 = 81,449,424.82/x
  3. Step 3: Cross multiply
    145,017,883.31x = 200,129,512.97 × 81,449,424.82
  4. Step 4: Simplify right side
    145,017,883.31x = 16,300,433,719,505,336
  5. Step 5: Solve for x
    x = 16,300,433,719,505,336/145,017,883.31
  6. Step 6: Final answer
    x = 112,402,921.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.